Fixed animation preview when deleting

js/controller/AnimatedPreviewController.js

@@ -51,12 +51,13 @@
 	};
 
    	ns.AnimatedPreviewController.prototype.refreshAnimatedPreview = function () {
-      this.renderer.render(this.framesheet.getFrameByIndex(this.animIndex), this.previewCanvas, this.dpi);
-      this.animIndex++;
-      if (this.animIndex == this.framesheet.getFrameCount()) {
-        this.animIndex = 0;
-      }
-      this.startAnimationTimer();
+   		if (!this.framesheet.hasFrameAtIndex(this.animIndex)) {
+   			this.animIndex = 0;
+   		}
+		
+		this.renderer.render(this.framesheet.getFrameByIndex(this.animIndex), this.previewCanvas, this.dpi);
+		this.animIndex++;
+		this.startAnimationTimer();
     };
 
 })();

js/model/FrameSheet.js

@@ -65,12 +65,17 @@
 		}	
 	};
 
+	
+	ns.FrameSheet.prototype.hasFrameAtIndex = function(index) {
+		return (index >= 0 && index < this.getFrameCount());
+	};
+
 	ns.FrameSheet.prototype.getFrameByIndex = function(index) {
 		if (isNaN(index)) {
 			throw "Bad argument value for getFrameByIndex method: <" + index + ">";
 		} 
 
-		if (index < 0 || index > this.getFrameCount()) {
+		if (!this.hasFrameAtIndex(index)) {
 			throw "Out of bound index for frameSheet object.";
 		}
 
@@ -78,10 +83,10 @@
 	};
 
 	ns.FrameSheet.prototype.removeFrameByIndex = function(index) {
-		if(index < 0 || index > this.getFrameCount()) {
+		if(!this.hasFrameAtIndex(index)) {
 			throw "Out of bound index for frameSheet object.";
 		}
-		frames.splice(index, 1);
+		this.frames.splice(index, 1);
 	};
 
 	ns.FrameSheet.prototype.duplicateFrameByIndex = function(index) {

js/piskel.js

@@ -296,8 +296,10 @@ $.namespace("pskl");
 
       xhr.send(formData);
 
-      event.stopPropagation();
-      event.preventDefault();
+      if(event) {
+        event.stopPropagation();
+        event.preventDefault();
+      }
       return false;
     }
   };